Gustave cook



(No Model.)

G. COOK.

N 394 NUT LOCK.

,462. Patented Deo. 11, 1888.

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NITED STATES PATENT OFFICE.

GUSTAVE COOK, OF N EIV ORLEANS, LOUISIANA, ASSIGNOR TVO-THIRDS TO M. G.MAY AND II. J. IIANSELMAN, BO'III OF SAME PLACE.

NUT-LOCK.

SPECIFICATION formingpart of Letters Patent No. 394,462, dated December11, 1888.

Application filed May 14, 1888. Serial No.273,891. (No model.)

To all whom, it may concern,.-

Be it known that I, GUSTAVE COOK, a citizen of the United States,residing at New Orleans, in the parish of Orleans and State ofLouisiana, have invented certain new and useful Improvements in aNutfLock; and I do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it ap- Io pertains to make and use the same.

My invention relates to improvements in a nut-lock in which wedges aremade to operate in conjunction with bolts; and the objects of myinvention are to provide a nut-lock for railroads and bridges that willkeep nut on bolt in a positive position. I attain these ob- Iiects bythe mechanism illustrated in the accompanying drawings, in which- Figurel is a side view of nut-lock when 2o wedges are placed in position. Fig.2 is an end view showing bolt without wedge. Fig. 3 is a side viewshowing bolts with wedges detached. Fig. 4 is a top view of bottomwedge. Fig. 5 is an end view of bottom wedge; Fig. 2 5 6, a top view oftop wedge; Fig. 7, an end view of top wedge.

Similar letters refer to similar parts throughout the several views.

E represents a fish-plate, through which 3o bolts Cl pass.

B designates a wedge-shaped plate, having a longitudinal slot-opening atthe end of the said wedge, and thereby forming two legs, d a, which,when the plate is in position, extend on each side of the bolts. On eachside of the thick end of the plate B is erected a wedgeshaped lug, F,with the thinner portion facing inward.

A designates a wedge-shaped plate, having 4o a longitudinal open-endedslot, forming legs b, and on the edges of upper surface is provided withlongitudinal shoulders or ribs H.

The free end of each leg b is provided on its outer edge with teeth D.Then the bolts have been placed and the nuts screwed on, the plate B isplaced so that its legs straddle said bolts. Then the thin end of theplate A is placed on the thin end of the plate B, and moved on the samewith the legs b straddling the bolts and the nuts riding over the faceof 5o the said plate between the shoulders II. As the plate A is movedforward, the wedge action carries it upward against the nuts, and thesaid forward movement carries the toothed ends of the legs b between thelugs F, by which 5 5 latter they are firmly held, there being enoughresiliency in the said legs to keep the said lugs firmly engaged betweenthe teeth.

As will be seen, the nuts are prevented from turning by the shoulders H,while the plates 6o are firmly locked together and cannot move out ofengagement with the bolts, being limited by the length of their slots,the closed ends of which are at opposite points when the plates are inposition.

Having described my invention, what I claim is l. A nut-lock formed oftwo slotted wedgeshaped plates, one plate carrying lugs and the otherplate having legs formed by the slot, and 7o provided at their free endswith teeth arranged to be engaged by the lugs on the other plate,substantially as described.

2. `A nut-lock consisting of two slotted wedge-shaped plates, onehavingI opposing lugs at one end and the other plate having legs formedby the slot having teeth on the free ends of said legs, and provided onthe top edges with longitudinal shoulders or ribs, substantially asdescribed. 8o

In testimony whereof I affix my signature in presence of two witnesses.

GUSTAVE COOK.

Witnesses:

MALACHI G. MAY, HENRY J. HANSELMAN.

